Samsung TV Forum

For digital audio, if an HDMI device supports audio, it is required to support the baseline format: stereo (uncompressed) PCM. Other formats are optional, with HDMI allowing up to 8 channels of uncompressed audio at sample sizes of 16-bit, 20-bit and 24-bit, with sample rates of 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz and 192 kHz.[16][46] HDMI also supports any IEC 61937-compliant compressed audio stream, such as Dolby Digital and DTS, and up to 8 channels of one-bit DSD audio (used on Super Audio CDs) at rates up to four times that of Super Audio CD.[46] With version 1.3, HDMI supports lossless compressed audio streams Dolby TrueHD and DTS-HD Master Audio.[46] As with the YCbCr video, device support for audio is optional. Audio return channel (ARC) is a feature introduced in the HDMI 1.4 standard.[4

The receiver does not control the data rate, so it must avoid bit slip by synchronising its conversion with the source clock.[7][8]

TOSLINK cables do not work well (and may even suffer permanent damage) if tightly bent or squashed by, say, a misplaced foot. Their high light-signal attenuation limits their effective range to 6.1 metres (20 ft) or so.[citation needed] On the other hand, TOSLINK cables are immune to ground loops and RF interference, unlike coaxial cables.[9]

S/PDIF is unidirectional, so it lacks flow control and retransmission facilities. This limits its utility in data communications.

If Anynet+ is enabled, Auto Power Link will not work.
If a TV or device connected to the Soundbar with an Optical Cable is off and there is no digital input to the Soundbar, the Soundbar will power off after 20 minutes

Version Data rate Max. application throughput
1.2 1 Mbit/s >80 kbit/s
2.0 + EDR 3 Mbit/s >80 kbit/s
3.0 + HS 24 Mbit/s See Version 3.0 + HS
4.0 24 Mbit/s See Version 4.0 LE